All-optical 3D blue phase photonic crystal switch with photosensitive dopants.

Blue phase (BP) liquid crystals (LC) have lately become the focus of extensive research due to their peculiar properties and structure. BPs exhibit a highly organized 3D structure with a lattice period in the hundreds of nm. Owing to such structure, BPs are regarded as 3D photonic crystals.

Microstructure of the Advanced Titanium Alloy VT8M-1 Subjected to Rotary Swaging.

In this study, the microstructural behavior of the advanced Ti-5.7Al-3.8Mo-1.

External and gastrointestinal parasites of the Franklin's Gull, Leucophaeus pipixcan (Charadriiformes: Laridae), in Talcahuano, central Chile.

Parasitological studies of the Franklin's gull, Leucophaeus pipixcan, are scarce, and knowledge about its endoparasites is quite limited. In order to describe its parasitic community, a total of 60 Franklin's gulls were captured in the coastal area in central Chile, using modified Bal-chatri traps. Ectoparasites were collected from all 60 live individuals through inspection of their plumage, while 30 were examined for endoparasites by standard parasitological necropsy.

Acari of Canada.

Summaries of taxonomic knowledge are provided for all acarine groups in Canada, accompanied by references to relevant publications, changes in classification at the family level since 1979, and notes on biology relevant to estimating their diversity. Nearly 3000 described species from 269 families are recorded in the country, representing a 56% increase from the 1917 species reported by Lindquist et al. (1979).

A new species of the feather mite genus Dubininia Vassilev, 1958 (Acari: Xolalgidae) from the Black-thighed Falconet Microhierax fringillarius (Falconiformes: Falconidae).

A new feather mite species Dubininia microhieracis sp. n. (Analgoidea: Xolalgidae) is described from the Black-thighed Falconet Microhierax fringillarius (Drapiez) (Falconiformes: Falconidae) from Java.

Complexity of mitochondrial dynamics in neurons and its control by ADP produced during synaptic activity.

This review focuses on different aspects of dynamics of mitochondria in neuronal cytoplasm which play an important role in the life and fate of neurons. It starts with description of the energy supply in the brain; considers the typical patterns of mitochondrial movements; relates them to the neuronal activity and in particular at the synapses; extends to the analysis of the origin of local ATP changes in the cytoplasm; considers main features of motor-assisted movements of mitochondria and their role in determining a transport velocity; describes the measurements of ATP gradients in neuronal processes and relates them to spatial variations in the mobility of mitochondria that occur in the vicinity of synapses due to the local ADP increases; considers the influence of hypoxia and intracellular signalling pathways on mitochondria movements. Finally, the recent views on the mechanisms and possible functional role of mitochondrial network as a whole in neurons are discussed and unresolved issues and future perspectives in this field of research are delineated.

Leucocytozoon hamiltoni n. sp. (Haemosporida, Leucocytozoidae) from the Bukharan great tit Parus bokharensis.

A new species of Leucocytozoon with gametocytes in fusiform host cells is described from the Bukharan great tit Parus bokharensis. It represents the first leucocytozoid in which the host cell nucleus is split into 2 more or less symmetrical portions, each located at an end of the host cell within its elongated fusiform processes. This species appears to be restricted with respect to geography and host.